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Chubing Peng
Chubing Peng, Sewickley, PA US
| Patent application number | Description | Published |
|---|---|---|
| 20100046083 | SOLID IMMERSION FOCUSING APPARATUS FOR HIGH-DENSITY HEAT ASSISTED RECORDING - In a particular embodiment, a solid immersion lens includes meta-material slabs formed from multiple layers of at least two different compositions. Each meta-material slab has a first effective index of refraction. The meta-material slabs are adapted to propagate an evanescent wave in a direction parallel to an axis to form a cone-shaped wave along the axis. The solid immersion lens further includes a core sandwiched between the meta-material slabs along the axis and having a second index of refraction that is less than the first effective index of refraction. The core directs surface plasmons that are excited by the cone-shaped wave to a focused area coincident with the axis. | 02-25-2010 |
| 20100074063 | SYSTEM TO DELIVER LIGHT TO A SLIDER FOR HEAT-ASSISTED RECORDING - In a particular embodiment, a recording head includes a tapered waveguide adapted to propagate light from a light source a slider adjacent to a surface of a storage medium. The tapered waveguide is adapted to output an elliptical beam to a grating coupler on a slider. The recording head further includes a slider waveguide extending substantially normal to a surface of the storage medium and a grating adapted to couple the elliptical beam into the slider waveguide. | 03-25-2010 |
| 20110103201 | LIGHT DELIVERY WAVEGUIDE - A light source and a waveguide are mounted on a recording head slider. Light rays are emitted from the light source into the waveguide. The waveguide may include two core layers for light ray transmission. The first core layer enhances light coupling efficiency from the light source to the second core layer. The second core layer transforms a profile of the light. The waveguide may include a tapered portion with a narrow opening near the light source and a wider opening near the tapered portion exit. The light rays passing through the waveguide may be directed toward a collimating mirror. The collimating mirror makes the light rays parallel or nearly parallel and re-directs the light rays to a focusing mirror. The focusing mirror focuses the collimated light rays to a spot on a magnetic media disc. | 05-05-2011 |
Chubing Peng, Minnetonka, MN US
| Patent application number | Description | Published |
|---|---|---|
| 20110070463 | META-MATERIAL SLAB WITH ANISOTROPIC PERMITTIVITY - In a particular embodiment, a meta-material slab is formed from multiple layers of at least two different compositions. The meta-material slab is adapted to propagate an evanescent wave in a direction parallel to an axis to form a cone-shaped wave along the axis. | 03-24-2011 |
| 20110299080 | CHARACTERIZING OPTICAL ANTENNA NEAR FIELD TRANSDUCERS - An apparatus and associated method for characterizing a near field transducer (NFT) is provided that has computer instructions stored in memory and executable to perform computational logic that, in response to a selected electromagnetic radiation excitation of resonant collective oscillations on a surface of the NFT, compares a magnitude of a depolarization field associated with the excited resonant collective oscillations to a predetermined threshold to characterize the NFT in terms of demonstrated radiant efficiency performance. | 12-08-2011 |
Chubing Peng, Pittsburgh, PA US
| Patent application number | Description | Published |
|---|---|---|
| 20100290116 | PHASE COMPENSATOR FOR COUPLING AN ELECTROMAGNETIC WAVE INTO AN OPTICAL CONDENSER - An apparatus comprising a phase compensator and an optical condenser in communication with the phase compensator. The phase compensator provides for phase shifting a portion of an electromagnetic wave. The optical condenser is shaped to direct the electromagnetic wave to a focal region of the optical condenser. | 11-18-2010 |
Chubing Peng, Allison Park, PA US
| Patent application number | Description | Published |
|---|---|---|
| 20090002867 | Alternative Sensors For Tracking And Timing In Bit Patterned Media - An apparatus includes a bit patterned magnetic storage media, a write transducer positioned adjacent to the bit patterned magnetic storage media, a write driver coupled to the write transducer to deliver write pulses to the write transducer, an optical sensor for producing a bit pattern signal, and a timing recovery circuit for producing a synchronization signal in response to the bit pattern signal, wherein the timing of the write pulses is adjusted in response to the synchronization signal. | 01-01-2009 |
| 20090073843 | Planar optical waveguide for heat assisted magnetic recording - An optical waveguide includes a core guiding layer, a cladding layer adjacent to the core guiding layer, a reflective layer, and a multiple layer stack on the reflective layer. The multiple layer stack includes a periodic arrangement of dielectric bilayers that each include a first dielectric layer and a second dielectric layer. An index of refraction n | 03-19-2009 |
| 20090116804 | Integrated Device For Heat Assisted Magnetic Recording - An apparatus includes a first waveguide configured to focus an electromagnetic wave to a focal region, and a second waveguide to further condense the light to an optical spot. The second waveguide includes a metallic structure defining an opening having one end positioned adjacent to the focal region and a multilayer structure positioned in the opening, the multilayer structure including a first layer of dielectric material, and second and third layers of dielectric material positioned on opposite sides of the first layer. A layer of lower index of refraction than that of the first dielectric layer may be positioned adjacent to the inner walls of the opening in the second waveguide to efficiently excite surface plasmons, and propagate them with low loss. | 05-07-2009 |
| 20100046889 | Apparatus and Method For Coupling Light to a Thin Film Optical Waveguide - An apparatus comprises an optical waveguide, a grating for coupling light into the waveguide, and an optical element for splitting a light beam into a plurality of beams that strike the grating at different angles of incidence. | 02-25-2010 |
Chubing Peng, Bloomington, MN US
| Patent application number | Description | Published |
|---|---|---|
| 20120039155 | Hybrid Near-Field Transducer For Heat Assisted Magnetic Recording - An apparatus includes a planar waveguide having a core layer and a cladding layer adjacent to the core layer, the waveguide being shaped to direct light to a focal point; a magnetic pole adjacent to the cladding layer; and a near-field transducer positioned adjacent to the focal point, wherein the near-field transducer includes an enlarged portion and a peg having a first end positioned adjacent to an end of the waveguide and a second end positioned adjacent to a side of the enlarged portion. A data storage device that includes the apparatus is also provided. | 02-16-2012 |